Floor drain trap



Aug. 25, 1931. 5, 3, BROWN 1,820,596

FLOOR DRAIN TRAP Filed March 21, 1930 Samuel [3.E71c7w11 I'rlverncn' A Harv 1E9 l atented Aug. 193i UN i T E;

; SAMUEL a. BRO

FLOOR DRAIN TRAP Appl icatien filed March This invention relates to floor drain traps, particularly adaptable for automobile wash stands and other places which require drain ing. i

' The wash water from cleaning automobiles and other dirty and greasy objects, contains not only'sediment but more or less gasoline and lubricating oil. In order to prevent the drain or soil pipe from being filled, it is necessary to separate the sediment fr m the Wat r, and it is also imperative that the oils, particularly the gasoline, be kept from entering the sewer, since the volatile gases there from will permeate the drainage system, and

explode if by chance they reach a spark or flame It is alsooccasionally necessary both to test the drainage connections and to flush the drain to insure its proper condition.

The purposes of the present invention are to provide an improved trap which will remove the sediment from the drain liquids and hold it so that it may be easily removed from the trap; to provide an improved trap which will remove inflammable oils and greases from 2 the drain water and hold them so that they maybe easily removed from the trap, and to render their removalfirst necessary before the sediment chamber can be emptied; to provide an improved removable separating pot; to provide an improved closing bottom and improved sides to said pot designed to both baiiie and to avoid the collection ofsediment thereon; to combine the sediment and oil removing features-into an improved constructionso as to produce an improved trap from which the accumulations may be easily and positively removed; to provide automatic and positive means for salvaging valuable productsv and by-products'such as gasoline,

4O oils, and other ingredients carried in drainage liquids; to provide means designed to effectivelyprevent lighter than water portions of drainage liquids entering the drain-' age system, to limit and control the downivard movement of sa d llghter than water portions caused by volummous or rapld flow and to diffuse said portionshorizontally over the surface of the water; to provide means for retaining the lnflammable o1ls,'gasol1n'e, fioand greases w1th1n a given area formed by was. Serial No. 437,874.

the vvalls of a separating pot and the upper surface of the water until such time'as they greases from the trap; to provide means for choking the trap when the accumulated sediment therein is of such quantity as to make its removal advisable; by an improved con struction to substitute trap choking for trap washing and to thereby force trap cleaning before any clogging of themain drain is ex perienced; to provide a positive non-washable trap designed to avoid the entrance of solid matter, inflammable oils, gasoline and greases into the drainage system, and to avoid the escape of noxious gases from the system; to provide an improved non-cloggable cover through which'drain liquids may enter the trap; to combine therewith improved bafiling means; to provide strainermeans embodied in the cover of such detail and construction as to direct the flow of volatile oils, asoline, and greases to a point directly over the baflie plate discharging the same thereon, therebyspreading the same over the surface ofthe water in the separating chamber and precluding possibility of the saidgasoline, oils and greases being drivendownwardly by a heavy influx of liquids to a level where they might res ATENT oF FIc-s;

Wis, or LYNN,I IASSAGHUSETTS, .es'sieivo'it 'ro CHARLES w. LovETrr,

or LYNN, TIIASSACI'EUSETTS i escape from within the area of the chamber;

to provide means for effectively and conveniently flushing and testing the connected joints of the drainage system; to providemeans for injecting steam for degreasing purposesorhigh pressure water (hot orcold) for cleaning purposes; to provide an improved construction adaptable to" conveniently afford the above purposes from the level of the finished floor;to provide the various other ad vantages and results made evidentfrom thefollowing specification. r I

In general, I accomplish the objects of my invention by combining of specified construction a main body pot, an inner sediment deposit pothin'ged to swing out for'du nping purposes, and a removable, sloping" sided, open bottom, separating pot, the outlet of. said 'niain'body having a bent shapewithin the body designed to form a seal in'conjunction with liquid in the body pot, and being provided at its inner end with a removable threaded cap, its outer end carrying a clean out unit, with a floor level opening, also provided with a threaded cap, said separating pot having a strainer cover with graduated perforations therein (said cover being here inafter termed the graduated strainer cover) the smallest perforations being at the outer edge thereof and gradually increasing to a large opening at the center, under which is located a baflie plate adaptable to diffuse the flow of liquids falling thereon and to cause the same to spread horizontally over the surface of the liquid beneath. A cone shaped plug of suitable size to close the bot tom of the separating pot is secured to and below the baffle plate and a ringed handle is conveniently placed above the baille plate for lifting out purposes.

For a better understanding of the purposes of my invention, it had best be understood that upon the completion of a pll'imbing job a test, so called, is made from the entrance of the system into the sewer to the highest point in the stack, for the purpose of establishing that all connected joints are tight and will stand the various water pressires to which they may be subjected. In order to facilitate the making of this tect, all open ends must be closed, or as technically described plugged to hold the back pressure of the testing water, and this has oresented a problem of varying expense and solution. My improved construction is designed to meet this requirement. Again, many conditions under which drainage systems function reuire frequent and thorough cleaning and dashing of the system and my construct-ion renders. this both convenient and inexpensive. My improved construction is also designed to inexpensively and effectively meet the exacting requirements of fire hazard com lnittees, commissions, and underwriting boards in the safe handling of explosive and combustible gases, oils, and greases.

When it is desired to flush the sewerage system, the threaded cap on the clean-out unit is removed and a hose for live steam, hot or cold water is secured to the clean-out at the floor opening. A threaded cap is then fitted tightly to the outlet opening of the main body pot, and the flushing continues.

In use as the gasoline, oil, and grease bearing liquids gravitate and. flow to a lower point, the oils and greases being lighter than water, float at the top. As the liquids pass first to and over the smallest perforations at the outer edge of the cover, the tendency of the underneath portions (i. e. the water) is to pass through these small perforations while the tendency of the lighter than water portions (i. e. the gasoline, oils, and greases) is to pass on to the larger perforations towards the center of the cover. As the flow through the open bottom of the separating pot to the sediment deposit pot below. I traps as herefore constriilcted when the sediment pot was filled, trap washing resitilted the sediment then passing on to the main body pot and from thence to the drainage syrtem. In my improved construction, when the sediment pot is filled, the trap chokes, no washing being possible and this choki g requires cleaning. Cleaning is effected by removing the graduated strainer cover and applying lifting force to the ringed handle, whereupon the cone shaped plug closes the open bottom of the separating pot and as the lifting force continues, the separating pot and its contents of gasoline, oils and greases are removed intact and salvaged by deposited in some Convenient and safe container. The sediment pot is then swung back on its hinges and dumped. in some handy recepta ole placed there to receive it or otherwise. 'l hu" the trap avoids indolent employees allowing its washing sediment, gasoline, oils, and greases into the sewerage em with possible hazardous consequences, which in con ted cen ters is productive of terrific and or -.en fatal explosions and fires.

Referring to the accompanying drawings which form a part of this specification and in which similar letters of reference refer to similar parts throughout the various views, Figure 1 shows a perspective view of my device with parts of the main body trap, sedi ment pot, separating pot, and cover broken away to show the inner construction. F ure 2 is a vertical longitudinal cross sectidn through the trap, and Figure 3 is a vertical transverse cross section. F igures 2 and 3 both illustrate the trap as filled with water, sediment, and lighter than water liquids. Figure 4 is a cross sectional view of the trap at right angles to the cross sectional view in Figure 2.

Referring again to the figures, 1 shows the main-body pot or containing shell, having a horizontal flange 2, near its top by means of which it may be set into or hung from a floor or surface to be drained. A downwardly turned pipe elbow unit 3, forms an outlet from said main pot, the lower end of this elbow opening'at 4 being beneath the normal level of the water in the pot so that it acts as a trap for sewer gas. The lower end of the elbow at 4 is fitted with a screw plug or cap 4 Intermediate its ends the elbow unit has a clean-out opening 5 also carrying. a screw plug or cap 5 The outer end of the elbow unit 3 has a collar 6 which is adapted to receive a soil or sewer pipegconnection.

opposite the hinge 8 by a stop lug 1O which rests against a cooperating inner flange 11 on the main pot. The sediment pot,

is shaped at 12 to fit over the elbow 3 and has its opposite Wall at13 formed on the are of a circle aboutthe hinge 8 so that when it is turned up it clears the inside of the main pot. The sediment pot is narrower than the main pot' so that a free space is allowed on either side for the water to overflow into the main pot as illustrated in Figure 4.

The removable separating pot is suspended within the sediment pot and comprises the side walls 14, and the cone shaped plug 15, designed to close the bottom of the separatg pot when a lifting force is applied to the ringed handle 16 above the baffle plate 17 The position by the cross rod 18 extending from the sides of the separating pot. The graduated strainer cover fits into a receiving shoulder 20 on the separating pot, forms a continuation of the floor over the trap and is designed to be lifted off so as to render ready 7 access to the ringed handle 16. The smallest perforations therein 21 are at its outer edge and are gradually increased in size toward the center opening 22. I

From the drawings it will'be noted that the strainer cover is located only slightly above the overflow edges upon the sediment pot. The reason for this construction is that as the gasoline and light oils collect in the separating pot the column of water in the sediment pot will support a higher column,

of gasoline and light oils in the separating pot and will therefore cause the strainer to indicate a flooded condition. There is therefore provided a visual indication of when it is necessary to empty the separating pot of accumulated gasoline.

While I have illustrated and described a preferred construction for carrying my invention into effect, this is capable of variation or modification without departing from the spirit of the invention. I therefore do not wish to be limited to the exact details of construction herein set forth but desire to baflle plate is supported in its operating tainingfloor draining .trap,having in combination a main pot, a drain connection with.

removable plug at its, inner end opening under the normal water level in said pot and forming a sewer gas trap, a clean-out opening andremovable plug accessible from the floor; ievel, an open topped sediment pot set into the main potand hinged at one side thereof whereby itmay be lifted to discharge the sediment accumulated therein, a removable open top and bottom separating pot, a removablestrainer cover for the separating pot, with graduated perforations therein, the smallest perforations being at the outer edge of said cover gradually increasing to alarge opening at the center, a baffle plate located be neath said cover, a cone shaped plug adaptable'to close the bottom of said separating pot, and a handle member above said ba'lfle platefor raising said'baflieplate and cone plug so as to close the bottom of said sepi rating pot and provide for its removal with contents,.and said strainer cover being located slightly above the overflow edges of said sediment pot so as to indicate by flood-- ing thenecessity of emptying said separating pet from acoumuiated gasoline.

2. A gasoline oil, greaseand sediment retaining floor draining trap, having in combi nation a main pot, a drain connection with removable plug at its inner end, a-clean-out' opening and removable plug accessible from the floor level, an open topped sediment pot set into the main pot and hinged at one side thereof whereby it may be lifted to discharge the-sediment accumulated therein, a removable open top and bottom separating pot, a removable strainer cover for the separating pot, With'graduated perforations therein, the smallest perforations being at the outer edge of said cover and gradually increasing to a large opening at the center, a baffle plate located beneath said cover, a cone shaped plug adaptable'to close the bottom of said separating pot,'a handle member above said bafiie plate for raising said bai'fleplate and cone plug so as to close the bottom of said separating pot and provide for its removal with contents, and sa1d stralner cover being located slightly above the overflow edges of said sediment pot so as to indicate by flooding'the necessity of emptying sa1d separating pot from accumulated gasoline.

3. A gasoline, oil, grease and sediment re-;

taining floor draining trap, havingin combination a main pot, a drain connection with removable plug at its inner end, a clean-out opening and removable plug accessible from the floor level, an open topped sediment pot set into the main pot whereby it may be lifted to discharge thesediment accumulated therein, a removable open top and bottom separating pot, a strainer cover for the separating pot, with graduated perforations therein, the

smallest perforations being at the outer edge of said cover and gradually increasing to a large opening at the center, a battle plate located beneath said cover, a cone shaped plug adaptable to close the bottom of said separating pot, a handle member above said bafiie plate of raising said baffle plate and cone plug so as to close the bottom of said separating pot and provide for its removal with contents, and said strainer cover being located slightly above the overflow edges of said sediment pot so to indicate by flooding the necessity of emptying said separating pot from accumulated gasoline.

4. A gasoline, oil, grease and sediment reraining iloor draining trap, having in combination a main pot, a drain connection with removable plug at its inner end opening under the normal water level. in said pot and forming a sewer gas trap, a clean-out opening and removable plug accessible from the floor level, an open topped sediment pot set into the main pot whereby it may be lifted to discharge the sediment accumulated therein, a removable open top and bottom separating pot, strainer cover, a cone shaped plug adaptable to close the bottom of said separating pot, a handle member for raising said pl g so as to close the bottom of said separating pot and provide for its removal with conten s, and strainer cover being located sl ,7 tly above the overflow edges of said sedimentpot so as to iinlicate by flooding the necessity of emptying said se iarating pot from accun'iulated gasoline.

5. A gasoline, oil, grcz'tsc, and sediment retaining floor draining trap, having in combination a main pot, a drain connection with removable plug at its inner end, a clean-out opening and removable plug accessible from the floor level, an open topped sediment pot set into the main pot and hinged at one side thereof whereby it may be lifted to discharge the sedin'ient accumulated therein, a rc1novable open top and bottom separating pot, a strainer cover, a cone shaped plug adaptable to close the bottom of said separating pot, a handle member for raising said plug so as to close the bottom of said separating pot and provide for its removal with contents, and said strainer cover being located slightly above the overflow edges of said sediment pot so as to indicate by flooding the necei z ity of en'iptying said separating pot from accumulated gasoline.

(3. A gasoline, oil, grease and sediment retaining fioor draining trap, having in combination a main pot, a drain connection with removable plug at its inner end, a clean-out opening and removable plug accessible from the floor level, an open topped sediment pot set into the main pot and hinged at one side thereof whereby it may be lifted to discharge the sediment accumulated therein, a removable open top and bottom separating pot, a

strainer cover, means within said sediment pot to segregate and hold the gasoline, oil, and grease content of liquids passing through said trap, said means with its contents adaptable to be lifted out, and necessarily lifted out before the sediment pot can be dumped, and said strainer cover being located slightly above the overflow edges of said sediment pot so as to indicate by flooding the necessity of emptying said separating pot from accumulated gasoline.

7. A gasoline, o1l, grease and sediment retaining floor draining trap, having in combination a main pot, a drain connectlon with removable plug at its inner end, a clean-out opening and removable plugaccessible from the floor level, an open topped sediment pot set into the main pot whereby it may be lifted to discharge the sediment accumulated therein, a removable open top and bottom separating pot, a strainer cover, means Within said sediment pot to segregate and hold the gasoline, oil, and grease content of liquids passing through said trap, said means with its contents adaptable to be lifted out, and necessarily lifted out before the sediment pot can be dumped, and said strainer cover being lecated slightly above the overflow edges of said sediment pot so as to indicate by flooding the neces 'ty of emptying said separating pot l'l'UlIl zccnmulated gasoline.

8. A floor draining trap comprising a main pot, a drain connection therewith, a sediment pct havin overflow edges located within said main pot, a separating pot located within said sediment pot and a strainer cover posineed above said separating pot closely adjacent the level of the overflow edges of said sediment pot so as to serve as a flood indi cater when iiqn'i d of a lighter specific gravity than water has accumulated in said separating pot.

In testimony whereof I ail-ix my signature.

SAIVIUEL (i BROWN. 

